Wednesday

September 28, 2016
Number of results: 85,042

**physics**

a small mass M and a small mass 3M are 1.00 m apart. where should you put a third small mass so that the net gravitational force on it due to the other masses is zero

*October 18, 2009 by sam*

**college physics**

A small mass M and a small mass 3M are 1.00 m apart. Where should you put a third small mass so that the net gravitational force on it due to the other two masses is zero?

*June 6, 2010 by Anonymous*

**English**

A: I'm looking for a jacket. B: What size do you want? A: Small. 1) B: What color would you like? A: Red. 2) -------------------- 1) I want small. I want a small. I want a small size. I want a small-size jacket. I want a small-sized jacket. (Can we use all these expressions?) ...

*October 1, 2008 by John*

**Maths**

sonia had shells of three different sizes 4/9 of the shells were big and 2/5 of the remainder were medium sized the rest of the shells were small what fraction of the shells were small

*March 31, 2015 by Asha*

**English**

A: I'm looking for a jacket. B: What size do you want? A: Small. 1) B: What color would you like? A: Red. 2) -------------------- 1) I want small. I want a small. I want a small size. I want a small-size jacket. I want a small-sized jacket. (Can we use all these expressions?) ...

*October 1, 2008 by John*

**physics**

Three very small spheres are located along a straight line in space far away from everything else. The first one (with a mass of 2.59 kg) is at a point between the other two, 10.50 cm to the right of the second one (with a mass of 5.03 kg), and 20.40 cm to the left of the ...

*December 15, 2007 by rory*

**Math**

By Moving Only 2 sticks of these three equal sized squares cna be changed into 4 equal sized rectangles. which 2 sticks should be moved?

*September 6, 2009 by Chidera*

**Eating disorder**

if anorexic people see theirselves as "fat" in the mirror, why do they still buy small sized clothing...?

*October 13, 2011 by Angel*

**algebra**

A photo studio offers portraits in 8x10 and wallet-sized formats. One customer bought two 8x10 portraits and four wallet-sized portraits and paid $52. Another customer bought three 8x10 portraits and two wallet sized portraits and paid $50. What is the cost of a wallet-sized ...

*January 30, 2013 by cassidy*

**chemistry**

What instrument is used to determine the mass and relative ambuandaces of small atomic particles? You may be thinking of the mass spectrometer. I'm not sure how small you are talking about but the mass spec is used to determine atomic masses and relative abundance of the ...

*September 26, 2006 by carter*

**Physics**

Three very small spheres are located along a straight line in space far away from everything else. The first one (with a mass of 2.43 kg) is at a point between the other two, 10.60 cm to the right of the second one (with a mass of 5.17 kg), and 20.70 cm to the left of the ...

*December 15, 2007 by Lindsay*

**math**

By morning only 2 stacks of these three equal sized squares can be changed into 4 equal sized rectangles.which 2 sticks can be moved?

*September 5, 2009 by dera*

**Astronomy**

Why will detecting Earth-sized planets be much more difficult than finding Jupiter-sized planets around other stars?

*April 7, 2015 by San Mateo College*

**Chemistry**

is the molar mass value of a volatile liquid, such as ethanol, high or small? Usually small, but there are exceptions. The ability to be volatile means that the attractive forces between molecules in the liquid and vapor have to be small, so non polar molecules are the rule. ...

*January 20, 2007 by michelle*

**Grammar**

Identify the tenses (past, present, mixed): 1. Synthes self-retaining anterior cervical retractors were then placed behind the longus colli muscles. PAST TENSE ________________________________________ 2. There was a small rent in the middle left posterior longitudinal ligament...

*June 21, 2012 by Lori*

**Math**

an average sized female spider and a large spider can lay 2,100 egs at one time. The large spider lays 20 times the number of eggs as as the average sized spider. How many eggs does the average sized spider lay?

*December 10, 2010 by Anonymous*

**Geometry**

An architect is designing a public storage building with 2 different sized storage units the ceilings are 8 feet high in each storage unit a. All storage units have square floors the volume will be 1800 what are the dimensions of each small unit b. The ratio of dimensions of ...

*April 7, 2011 by Nicole*

**physics**

Two small beads having positive charges q1 = 34.0 nC and q2 = 55.0 nC are fixed so that the centers of the two beads are separated by a distance d = 0.450 m as shown in the figure. At what position x relative to q1 could you place a third small bead of unknown charge q in ...

*January 20, 2015 by Linda*

**phys101**

a hydraulic press contains oil of density=800kg/meter cube,and the areas of the large cylinder=0.5meter squad and area of small cylinder=0.0001meter squad.the mass of the large piston is 51kg,while the small piston has unknown mass m.If an additonal mass of 510kg is placed on ...

*April 19, 2010 by KABELO*

**Math**

"By Morning only 2 sticks of these 3 equal sized squares can be changed into 4 equal sized rectangles.which 2 sticks shold be moved"

*September 6, 2009 by Chidera*

**Physics**

Two blocks are connected by a cord passing over a small frictionless pulley. The angle is 30 degrees, and the mass of the small block is m=15kg. If the coefficient of friction between the small block and the inclined plane is .25 and the large block is accelerating down at 2m/...

*May 9, 2014 by T.J.*

**Physic**

Three balls are attached to a light rigid rod, as shown in the figure. A fulcrum is located at xf = 18.0 cm measured from the left end of the rod. Ball A has mass mA = 65 g and is located at xA = 3 cm. Ball B has mass mB = 12 g located at xB = 22 cm. Ball C has mass mC = 22 g ...

*March 3, 2011 by panda*

**physics**

Two metal disks are taped to a meterstick. The mass of the meterstick is 460 grams. Disk 1 has a mass of 300 grams and is located at the 28 cm mark. Disk 2 has a mass of 500 grams and is located at the 64 cm mark. At what posi- tion along the meterstick should you place a ...

*November 6, 2008 by Sandhya*

**math**

an average sized female spider and a large spider can lay a total of 2,100 eggs at one time.The large spider lay 20 times the number of eggs as the average sized spider.How many eggs does the average sized spider lay?

*December 8, 2011 by pinky*

**math**

an average sized female spider and a large spider can lay a total of 2,100 eggs at one time.The large spider lay 20 times the number of eggs as the average sized spider.How many eggs does the average sized spider lay?

*December 9, 2011 by pinky*

**math**

lara arranged the books in her bookshelf by size. 2/10 of the books were tall and 1/2 of the books were medeium sized. If 12 of the books were small, how manyu total books did she arrange?

*April 13, 2010 by alisha*

**phy**

Two objects attract each other gravitationally with a force of 3.5 10-10 N when they are 0.33 m apart. Their total mass is 4.0 kg. Find their individual masses. I got my answers but its say incorrect. the values i got 3.43 for larger mass and 0.57 small mass

*September 17, 2010 by ami*

**physics charges. please help!**

A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...

*November 12, 2012 by Matt*

**science**

Three very small spheres of mass 3.00 kg, 5.00 kg, and 3.00 kg are located on a straight line in space away from everything else. The first one is at a point between the other two, 13.0 cm to the right of the second and 24.0 cm to the left of the third. Compute the net ...

*June 27, 2012 by Rachel*

**physics**

A 22 kg sphere is at the origin and a 12 kg sphere is at (x, y) = ( 22 cm , 0 cm) At what point or points could you place a small mass such that the net gravitational force on it due to the spheres is zero? please show all of work...i don't get it

*April 24, 2010 by nimo*

**math**

A small, medium, and large sized chicken were weighing themselves on a scale. The large and medium chicken steppedon the scale together with a total weight of 30 lbs. The large and small chicken had a total weight of 25 lbs. The small and medium chickens had a total weight of ...

*January 17, 2012 by Leann*

**math**

A small, medium, and large sized chicken were weighing themselves on a scale. The large and medium chicken steppedon the scale together with a total weight of 30 lbs. The large and small chicken had a total weight of 25 lbs. The small and medium chickens had a total weight of ...

*January 17, 2012 by Leann*

**Math**

Mrs.Sue the squares are not in a horizantol form. like the one in the link. there are 2 squares horizantol and 1 square on top of the 1 of the horizantol squares By Moving Only 2 sticks of these three equal sized squares cna be changed into 4 equal sized rectangles. which 2 ...

*September 6, 2009 by Chidera*

**Medical billing**

What conclusions can you draw about that challenges for record management in small, medium-sized, and large facilities? Do these challenges seem to be more closely tied to the size of the facility or to the number of records typically handled in a day?

*April 16, 2009 by Nickey*

**physics, help urgent!**

charge Q = +4.5 ƒÝC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 ƒÝC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...

*November 14, 2012 by Brette*

**Physics. Please please help!**

A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...

*November 14, 2012 by Kyle*

**mechanics and heat**

A stationary mass explodes in to two parts of masses 0.4 Kg and 4 Kg . if the larger mass has a kinetic energy of 100J ,what is the kinetic energy of the small mass ?

*January 6, 2015 by awash*

**algebra**

a woodworking project calls for three pieces. the longest piece is twicw the length of the middle-sized piece, and the shortest is 10 inches shorther than the middle-sized piece. the board os 70 inches. how much must each peice be?

*January 31, 2012 by teesha*

**college physics**

A small ball of mass m is aligned above a larger ball of mass M = 0.79 kg (with a slight separation), and the two are dropped simultaneously from height h = 2.0 m. (Assume the radius of each ball is negligible relative to h). (a) If the larger ball rebounds elastically from ...

*November 12, 2009 by Steve*

**physics**

a small mass is suspended from along thread so as to form a simple pendulum.the period T of the oxillation depend on the mass M,the length L of the thread and the acceleration G of free fall at the place concerned so that T =km^x,L^y,G^z where K = 2pie 1. Find the values of x,...

*October 5, 2013 by praise*

**Marketing**

The owner of a small hardware store---the only one in a medium-sized town in the mountains---has just learned that a large home improvement chain plans to open a new store nearby. How difficult will it be for the owner to plan for this competitive threat? w

*May 19, 2014 by Rolle *

**physics**

M1 is a spherical mass (38.6 kg) at the origin. M2 is also a spherical mass (10.3 kg) and is located on the x-axis at x = 59.8 m. At what value of x would a third mass with a 20.0 kg mass experience no net gravitational force due to M1 and M2?

*March 11, 2014 by Marie*

**URGENT physics**

M1 is a spherical mass (38.6 kg) at the origin. M2 is also a spherical mass (10.3 kg) and is located on the x-axis at x = 59.8 m. At what value of x would a third mass with a 20.0 kg mass experience no net gravitational force due to M1 and M2?

*March 11, 2014 by Marie*

**Physics Help**

A small, 200 g cart is moving at 1.50 m/s on an air track when it collides with a larger, 2.00 kg cart at rest. After the collision, the small cart recoils at 0.890 m/s. Q: What is the speed of the large cart after the collision? How do you set this up? Would it be like (mass ...

*August 6, 2011 by Cat21*

**Chem (Help!)**

I really need help answering these questions. A sample of CO2 gas with a mass of 0.30 g is placed in a 250 mL container at 400 K. What is the pressure in atmospheres exerted by this gas? Before you can put the numbers into an equation and solve for the volume, change the mass ...

*April 28, 2008 by Lisa*

**Physics. PLEASE HELP!!**

A small car of mass 985 kg is parked behind a small truck of mass 1551 kg on a level road. The brakes of both the car and the truck are off so that they are free to roll with negligible friction. A 83 kg woman sitting on the tailgate of the truck shoves the car away by ...

*April 7, 2012 by Amber*

**Math **

Sally and Peter have a lawn-mowing business. They earn $30 for a large yard, $21 for a medium-sized yard, and $15 for a small yard. If they mow 8 yards and there are at least 2 yards of each size, what is the maximum amount of money they can earn?

*February 2, 2012 by Minnie818*

**Physics!!**

The universal gravitational con- stant is 6.672 × 10−11 N m2/kg2. Objects with masses of 152 kg and 269 kg are separated by 0.45 m. A 53.5 kg mass is placed midway between them. Find the magnitude of the net gravitational force exerted by the larger masses on the 53.5 kg...

*May 8, 2012 by Bob*

**chem PLEASE HELP**

WHO MADE THESE ATOMIC DISCOVERIES? An atom has a nucleus that is very small In a reaction, the mass of the products must equal the mass of the reactants. Electrons are negatively charge pieces of matter. An electron has a mass that is very small compared to the size of the ...

*April 14, 2011 by Sal*

**Physics**

Given: The universal gravitational con- stant is 6.672 × 10−11 N m2/kg2. Objects with masses of 152 kg and 269 kg are separated by 0.45 m. A 53.5 kg mass is placed midway between them. Find the magnitude of the net gravitational force exerted by the larger masses on the ...

*May 3, 2012 by Bob*

**Physics**

Given: The universal gravitational con- stant is 6.672 × 10−11 N m2/kg2. Objects with masses of 152 kg and 269 kg are separated by 0.45 m. A 53.5 kg mass is placed midway between them. Find the magnitude of the net gravitational force exerted by the larger masses on the ...

*May 3, 2012 by Bob*

**physics**

A mass is dropped from a height of 30m, and at the same time from ground level (and directly beneath the dropped mass), and another mass is thrown straight up with a speed of 15 m/s. a) How far apart are the two masses after 0.5 s? b) Will the massses ever meet or pass each ...

*August 24, 2006 by Henry*

**Math**

Word problem A woodcarver wants to make a scale model of a chair. The height of the model will be 3 inches which is 0.08 times the height of the fl sized chair What is the size if the full sized chair in inches?? I got : 5.4 inches. Is this right??

*September 22, 2012 by Marko*

**physics **

small mass hangs at rest from a vertical rope of length that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle and the mass has been raised by a vertical distance . Assume the force's ...

*May 22, 2012 by sophie*

**algebra**

Three pieces of wood are needed for project. They are to be cut from a 90cm long piece of wood. The longest piece is to be 3 times as long as the middle sized piece and the shortest piece is to be 10 cm shorter than the middle sized piece. Can this be done with 2 cuts? If so, ...

*May 9, 2010 by Kristi*

**math**

Three pieces of wood are needed for a project. They are to be cut from a 90-cm-long piece of wood. The longest piece is to be 3 times as long as the middle-sized piece and the shortest piece is to be 10 cm shorter than the middle-sized piece. Can this be done with two cuts? If...

*May 23, 2010 by Annie*

**Math**

Three pieces of wood are needed for a project. They are to be cut from a 90-cm-long piece of wood. The longest piece is to be 3 times as long as the middle-sized piece and the shortest piece is to be 10 cm shorter than the middle-sized piece. Can this be done with two cuts? If...

*June 2, 2010 by Anonymous*

**physics**

The two masses in the Atwood's machine shown in the figure are initially at rest at the same height. After they are released, the large mass, , falls through a height and hits the floor, and the small mass, , rises through a height . Find the speed of the masses just before ...

*July 1, 2010 by meera*

**Physics**

A pendulum is made of two discs, one with mass M and radius R and the other with mass 2M and radius R, which are separated by a massless rod. The lighter disc is pivoted through its centre by a small pin. The discs lie on the same plane and their centres are a distance L apart...

*March 18, 2011 by Kagiso Setuke*

**marketing**

The owner of a small hardware store-the only one in a medium –sized town in the mountains-has just learned that a large home improvement chain plans to open a new store nearby. How difficulty will it be for the owner to plan for this new competitive threat? Explain your answer

*March 22, 2011 by ak*

**Science**

An object has more momentum if it has which of the following? a. a large mass and low velocity b. a high velocity and a small mass <- c. A high velocity and a large mass d. a low velocity and small mass

*November 4, 2015 by HELP!! URGENT!!*

**math**

The t-shirts for the fundraiser will cost $4.00 to make and there is a $25.00 delivery fee. There are two sized wristbands; a large one that will cost $5.00 to make, and a small one that will cost $3.00 to make. If everyone who orders wristbands orders one small and one large ...

*June 2, 2014 by anonymous*

**Physics**

A 70 cm diameter wheel is rotating at 1 300 revolutions per minute and a small 5g mass is fixed to the outer edge of the wheel. Calculate the strength and direction of the centripetal force that is exerted on the mass.

*April 21, 2016 by Mathew*

**BOBPURSLEY or anyone**

h t t p : / / w w w . j i s k h a .c o m / d i s p l a y . c g i ? i d = 1 25 2 8 8 8 9 2 9 ok hmmm m2 g = m1 (acceleration radial) so then if this is the correct equation my question... is how do you know when to consider the masses as a system and when not to? net force = ...

*September 13, 2009 by AP Physics B*

**statistics**

A survey of industrial salespeople who are either self-employed, work for small, medium-sized, or large firms revealed the following with respect to incomes: Of those who earn less than $20,000, 9 are self-employed, 12 are employed by small firms, 40 by medium size firms, and ...

*September 14, 2008 by Tom E.*

**physics**

Two identical weights of mass M are linked by a thread wrapped around a frictionless pulley with a fixed axis. A small weight of mass ‘m’ is placed on one of the weights. What is reaction force between m and M?

*February 8, 2014 by vaibhav*

**hcr 210**

I have an assignment for week 4 in HCR210 due Sunday. We are to interview small, medium-sized and large medical facilities and ask 13 questions regarding medical/patient records. There are no facilities in my area willing to disclose any information for these general questions...

*April 14, 2010 by anastasia*

**HCR 210**

I have an assignment for week 4 in HCR210 due Sunday. We are to interview small, medium-sized and large medical facilities and ask 13 questions regarding medical/patient records. There are no facilities in my area willing to disclose any information for these general ...

*May 24, 2010 by Cathy*

**physics**

three point particles are fixed in place in an xy plane. Particle A has mass mA = 3 g, particle B has mass 2.00mA, and particle C has mass 3.00mA. A fourth particle D, with mass 4.00mA, is to be placed near the other three particles. What (a) x coordinate and (b) y coordinate ...

*January 2, 2011 by Anonymous*

**Physics**

M1 = 45.0 kg is a spherical mass at the origin. M2 = 16.6 kg is also a spherical mass, and is located on the x-axis at x = 78.0 m. At what value of x would a third mass M3 = 15.5 kg experience no net gravitational force due to M1 and M2?

*July 11, 2015 by Natalie*

**science**

an oxide of arsenic = 0.927g 76% arsenic and 24% oxygen calculate the mass of oxygen that combines with one mole of arsenic atoms to form the oxide of arsenic. How many moles of oxygen atoms does this mass represent? Posted by Kirsty on Tuesday, February 6, 2007 at 3:50pm. an ...

*February 6, 2007 by Kirsty*

**Physics(Rotational Energy)**

Suppose three masses are arranged as shown, connected by a rodless mass. (2 kg)-------(6 kg)--------(4 kg) 2m 3m a) If this object is free to rotate in space, about what point will it spin? b) A small mass (m=0.1 kg) drops vertically onto the2 kg mass traveling 100 m/s and ...

*July 16, 2012 by ChristinaNguyen*

**Chemistry**

Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085) , had a total mass of 12.4 ± 0.1 g. What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the total mass.) (Input the ...

*August 29, 2012 by Amanda*

**Physics**

What minimum sized balloon would you have to fill in order to be able to be lifted into the air? Take your mass to be 100 kilograms and the temperature of the outside air to be 20 degrees C. Neglect the mass of the balloon rubber and basket and assume that the balloon is ...

*March 15, 2013 by steve*

**Chemistry 314**

Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085) , had a total mass of 12.4 ± 0.1 g. What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the total mass.) (Input the ...

*August 30, 2012 by Amanda*

**Physics**

Hung vertically, a mass less spring extends by 3.00 cm a mass of 739. G is attached to its lower end. The same mass and spring are then placed apart on a table. The spring is fixed in place and then the mass is given a velocity of 0.900 m/s towards the spring. a) What is the ...

*October 18, 2012 by Steeve*

**physics**

A compact car, mass 875 kg, moving south at 16 m/s, is struck by a full-sized car, mass 1660 kg, moving east at 12 m/s. The two cars stick together, and momentum is conserved in the collision. The wreck skids along the ground and comes to a stop. The coefficient of kinetic ...

*February 4, 2013 by Tony*

**Physics**

The diagram below shows a large cube of mass 25 kg being accelerated across a frictionless level floor by a horizontal force, F. A small cube of mass 4.0 kg is in contact with the front surface of the cube. The coefficient of static friction between the cubes is 0.71. What is ...

*November 15, 2012 by Bob*

**Math**

a parking lot can allocate 3 compact car spaces for every 2 spaces for full sized cars. if part of the lot has space for 40 full sized cars, how many compact cars could it hold if the parking lines were redrawn?

*November 13, 2013 by Heather*

**Physics**

A thin insulating thread of length L is attached to a point on the perimeter of a thin disk. Disk is has radius R< L and is charged with a uniform surface density, σ>0. At the end of the thread there is a small ball mass m and charge q>0. The mass happens to be ...

*February 6, 2010 by Sandhya*

**physics**

In the Atwood's machine of Figure 8-23, the two masses shown are initially at rest at the same height. After they are released, the large mass, m2, falls through a height h and hits the floor, and the small mass, m1, rises through a height h. The mass m2 remains at rest once ...

*March 31, 2011 by jennifer*

**Physics**

A mass is dropped from a height of 30m, and at the same time from ground level (and directly beneath the dropped mass), and another mass is thrown straight up with a speed of 15 m/s. a) How far apart are the two masses after 0.5 s? b) Will the massses ever meet or pass each ...

*August 22, 2006 by Jenny*

**Physics**

1. Suspend the meter stick by a string from its center. 2. Notice carefully where it balances. It probably will not balance exactly at 50 cm. All distances must be measured to this point (called the fulcrum). 3. Hang a 200 g mass on one side and a 50 g mass on the other and ...

*January 1, 2013 by Marilyn*

**Physics**

two point masses are located in the same plane. the distance from mass 1 to the center of mass is 3.0m. The distance from mass 2 to the center of mass is 1.0m. What is m1/m2, the ratio of mass 1 to mass 2?

*March 29, 2011 by Jacob*

**physics!!**

The two masses (m1 = 4.96 kg and m2 = 2.90 kg) in the Atwood's machine shown in the figure below are released from rest, with m1 at a height of 0.800 m above the floor. When m1 hits the ground its speed is 0.203 m/s. Assuming that the pulley is a uniform disk with a radius of ...

*October 21, 2012 by Emily *

**math**

B) A random sample of 16 mid-sized cars tested for fuel consumption gave a mean of 26.4Kilometers per liter with a standard deviation of 2.3 kilometers per liter. i) Assuming that the kilometers per liter given by all mid-sized cars have a normal distribution, find a 99% ...

*September 26, 2016 by joe*

**7th grade science help ASAP 2 questions!**

4. Most digestion takes place in the _____. (1 point) large intestine mouth small intestine stomach 5. The large intestine maintains ___________ by absorbing water from the _______, or undigested mass. (1 point) homeostasis; chyme digestion; saliva mechanical digestion; ...

*February 7, 2013 by Delilah*

**How Conceps Develops**

Jimmy's mom puts a large-sized serving of peas on Jimmy's plate and a medium-sized serving of peas on her own plate. Jimmy points to his mother's plate and comments that she gave Jimmy more peas than she gave herself. Jimmy is demonstrating _______ knowledge. A. social B. ...

*January 14, 2015 by Daniea*

**How conceps develop**

Jimmy's mom puts a large-sized serving of peas on Jimmy's plate and a medium-sized serving of peas on her own plate. Jimmy points to his mother's plate and comments that she gave Jimmy more peas than she gave herself. Jimmy is demonstrating _______ knowledge. A. social B. ...

*January 15, 2015 by Daniea*

**Physics**

Suppose that you let the masses m1 and m2 slide (without adding the third mass). a) What is the acceleration of the mass 25g? Hint: identify the force that produces the motion and the one that opposses and write the equation for the net force. b) What is the change in momemtum...

*December 2, 2008 by lulu*

**chemistry **

What does the fact that a blackbody can absorb light only in specific-sized "packets" say about light? A. It has no mass. B. It is composed of electrons. C. It is composed of atoms. D. It is quantized. I have no idea what the answer is

*December 11, 2014 by Morgan *

**physics-HELP**

Suppose that you let teh masses m1 and m2 slide (without adding the third mass). a. what is the acceleration of the mass 25g? Hint: Identify the force that produces the motion and the one that opposes and write the equation for the net force. b. what is the change of momentum ...

*December 2, 2008 by kim*

**i need help please!!**

Suppose that you let the masses m1 and m2 slide (without adding the third mass). a) What is the acceleration of the mass 25g? Hint: identify the force that produces the motion and the one that opposses and write the equation for the net force. b) What is the change in momemtum...

*December 2, 2008 by lulu*

**Physics**

Can someone walk me through how to work this? It's worded weirdly and I'm not sure how to solve it. Mass M1= 2.2 kg lies on a frictionless table, pulled by another mass M2= 4.1 kg under the in of Earth's gravity. a) What is in N the net force acting on the system of both ...

*March 3, 2015 by James*

**Statistics**

A random sample of 16 mid-sized cars tested for fuel consumption gave a mean of 26.4 kilometers per liter with a standard deviation of 2.3 kilometers per liter. i) Assuming that the kilometers per liter given by all mid-sized cars have a normal distribution, find a 99% ...

*May 11, 2012 by Nesa*

**AP Physics**

A ladder of unknown length and mass of 29 kg rests on a rough floor, and leans against a rough wall. The coefficient of static friction between the ladder and both the floor and wall are 0.68. Hanging on the ladder are two masses. The first mass is 9.9 kg and is located 5% ...

*December 4, 2010 by Mary*

**Physics**

1. Suspend the meter stick by a string from its center. 2. Notice carefully where it balances. It probably will not balance exactly at 50 cm. All distances must be measured to this point (called the fulcrum). 3. Hang a 200 g mass on one side and a 50 g mass on the other and ...

*January 2, 2013 by Marilyn*

**science**

a particle 100g attach with a horizontal spring moving s.h.m.with amplitude 5cm .when this particle is passes through mid point a small particle placed on it then both moving s.h.m.with amplitude 4cm.find the mass of small particle .

*March 1, 2015 by Jamal*

**physics**

A mass is dropped from a height of 30m, and at the same time from ground level (and directly beneath the dropped mass), and another mass is thrown straight up with a speed of 15 m/s. a) How far apart are the two masses after 0.5 s? b) Will the massses ever meet or pass each ...

*August 31, 2006 by Sarah*

**stats**

A random sample of mid-sized cars tested for fuel consumption gave a mean of miles per gallon with a standard deviation of miles per gallon. Assuming that the miles per gallon given by all mid-sized cars have a normal distribution, find a confidence interval for the population...

*April 9, 2014 by Anonymous*